RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD October 27
VO 210
IS 4
SP 731
OP 732
DO 10.1001/jama.1969.03160300071033
UL http://dx.doi.org/10.1001/jama.1969.03160300071033
AB